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【单选题】
青霉素抗菌作用的机理是A.
干扰细菌细胞壁的合成
B.
破坏菌细胞壁上的磷壁酸
C.
干扰菌细胞蛋白质的合成
D.
破坏菌细胞膜的通透性
E.
破坏菌细胞壁的多糖骨架
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举一反三
【单选题】---Mum, I’m leaving for Beijing tomorrow morning. --- Oh, good. But be sure to phone me _______ you get to Beijing, please.
A.
because
B.
why
C.
when
D.
if
【单选题】—I’m leaving for the exam. Bye, Mum. —Well, make sure you’ve got ________ ready.
A.
something
B.
anything
C.
everything
D.
nothing
【单选题】—Mum, I'm leaving for the party and I'm not coming back for dinner. —________, son!
A.
Don't make trouble
B.
Be careful
C.
Have fun
D.
Come back early
【单选题】--Mum, I'm leaving for the party and I'm not coming back for dinner. --( ),son!
A.
Be careful
B.
Come back early
C.
Have fun
D.
Don't make trouble
【单选题】腋下测量体温，高热为（）
A.
37.3°C～38.0°C
B.
38.1°C～39.0°C
C.
39.1°C～41.0°C
D.
41.0°C以上
E.
36.0℃～37.0°C
【单选题】---Mum, I’m leaving for the party and I’m not coming back for dinner. ---______, dear son!
A.
Be careful
B.
Have fun
C.
Come back early
D.
Don’t make trouble
【单选题】What would the number "2017" mean?
A.
A ship station's 1VIMSI.
B.
A coast station's MMSI.
C.
A coast station's selcall number.
D.
A ship station's selcall number.
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